The 21-year-old came on as a substitute in Germany's friendly against France last Friday which was targeted by suicide bombers as part of a co-ordinated series of attacks on the French capital in which 129 people were killed.

Then on Tuesday Germany's home friendly against the Dutch in Hanover was also called off an hour before kick-off after authorities received evidence of a significant security threat.

"We spoke about this but, like everyone, not in a special way," said Klopp.

"He is a young lad who was in a very difficult situation. Like all of us it is difficult to understand or to change.

"We have to trust in the people who have a bit more power to change it and we will see what happens. It was not the best experience for the boys but it was an experience.

"Now they are here, back at home."

The Premier League is considering asking its clubs to play the French national anthem La Marseillaise at all matches this week in a show of support and Klopp backed the idea.

"Of course it is a good thing to give a good sign again," he added.

"It is not only in football but it is the first time we are in the middle of the chaos - it is a very good sign and we will be part of this."